MicroNet Technology SP3508A - Manual (Page 27)

5.8.3 Port Security
A port in security mode will be “locked” without permission of address
learning. Only the incoming packets with SMAC already existing in the
address table can be forwarded normally. User can disable the port from
learning any new MAC addresses, then use the static MAC addresses screen
to define a list of MAC addresses that can use the secure port. Enter the
settings, and then click <Submit> to apply the changes on this page.
5.8.4 MAC Filtering
MAC address filtering allows the SP3508A to drop unwanted traffic. Traffic is
filtered based on the destination addresses. For example, if the network is
congested because of high utilization from one MAC address, users can filter
all traffic transmitted from that MAC address.
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